In 2003, Miki Yoshikawa made her professional manga debut with Glory Days, a one-shot published in Kodansha's Magazine Special. After working as an assistant for Hiro Mashima (Fairy Tail), she released another one-shot, Yankee-kun to Megane-chan, in Shonen Magazine Wonder in 2005. Yoshikawa is best known for her work, Yamada-kun and the Seven Witches, which began serialization in 2012 and has since sold over 3 million copies. In 2015, she attended Anime Expo as a guest and revealed that she was inspired by Dragon Ball manga and aimed to replicate some of Toriyama's panels and manuscripts. She credits Hiro Mashima for teaching her everything she knows about manga while working on Fairy Tail.